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Simplifying 2x + x + -1(5 + 2x) + -7 = 3x + 7 2x + x + (5 * -1 + 2x * -1) + -7 = 3x + 7 2x + x + (-5 + -2x) + -7 = 3x + 7 Reorder the terms: -5 + -7 + 2x + x + -2x = 3x + 7 Combine like terms: -5 + -7 = -12 -12 + 2x + x + -2x = 3x + 7 Combine like terms: 2x + x = 3x -12 + 3x + -2x = 3x + 7 Combine like terms: 3x + -2x = 1x -12 + 1x = 3x + 7 Reorder the terms: -12 + 1x = 7 + 3x Solving -12 + 1x = 7 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. -12 + 1x + -3x = 7 + 3x + -3x Combine like terms: 1x + -3x = -2x -12 + -2x = 7 + 3x + -3x Combine like terms: 3x + -3x = 0 -12 + -2x = 7 + 0 -12 + -2x = 7 Add '12' to each side of the equation. -12 + 12 + -2x = 7 + 12 Combine like terms: -12 + 12 = 0 0 + -2x = 7 + 12 -2x = 7 + 12 Combine like terms: 7 + 12 = 19 -2x = 19 Divide each side by '-2'. x = -9.5 Simplifying x = -9.5
| y^2+12y-49=0 | | (5v+5)(5v-5)=x | | 5z+2=3z-10 | | 5(15)+w+2=8w+15-36 | | 2n^2-7n-2=-8 | | 68/x=17/20 | | 34+x=3x | | 12-x=82 | | https://www.math.ucdavis.edu/~kouba/CalcTwoDIRECTORY/summationdirectory/img2.gif | | 5.9(e+2)=2.5e+16.2 | | 36/0,4 | | 10(6)+t-14=3t+6 | | 1/5x-1=0 | | 4(4x+9)=-12 | | x/64=15/6 | | (Z-9)(z+9)= | | 45/75=3/x | | 5/7=x/63 | | -5(t+3)=-30 | | (-9)(z+9)= | | -9=y+3 | | y/5-6=5 | | -3(z+4)+7=8z+39 | | 100=20n | | 4=30x+10 | | 4=30x | | ((6/5)x3-(4/7))((6/5)x3-(4/7))((6/5)x3-(4/7)) | | -4=30x | | 4x+11+2x+18=7x+22 | | ((6/5)x3-(4/7))((6/5)x3-(4/7)) | | -15=3b | | 2b+15=3b-3 |
